How To Get A Quote

Quotation requests are required in writing and prices cannnot be provided over the phone. Trade Prices require a company letter head or purchase order.

What Information Do We Require?

In order to process your quotation request and provide you with an accurate price, we require the following information (click here to see an example of the information we need):

  • The product you wish for us to quote. (i.e. aluminium windows)
  • The system you wish for us to quote. (i.e. Premium Plus Windows)
  • The product details, including; sizes, colours, glass, styles and designs for each item.
  • Any additional information, requirements or specialist instructions. (For example... I require; direct fix outerframes, internally glazed sashes, trickle vents, a 150mm projection cill etc.).

Please note: All of our products are bespoke and made-to-measure, to your exact specifications.

For more help and advice on specifying or pricing our products please call us on (01268) 681612.

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Hinged Aluminium Secondary Glazing

Hinged Secondary Glazing

Our hinged secondary glazing can either be butt hinged, friction hinged or parallel friction hinged, each has it’s own advantages and disadvantages. Generally hinged secondary glazing lends itself to use in hard to treat areas such as bay windows and other specialist applications. It is ideal for large glass areas where quick and easy regular access is required. i.e. for maintenance, ventilation or cleaning.

Butt hinged units open to around 150° giving a large clear opening for full access to the existing windows. Friction hinged units open to around 65° providing a large opening. The friction hinges allow the panel to be held in any given position, regulating ventilation. Parallel hinged or PIP™ secondary provides a restricted opening for controlled, secure ventilation. Hinged units can also be combined with Lift Out units, making them perfect for specialist applications.

Glass Options

Our standard glass for our secondary glazing is 4mm clear float glass. We have a huge variety of glass available for our secondary glazing and it is possible to tailor your secondary glazing to your individual requirements. You can specify glass for improved sound insulation, thermal performance or security. Different thinnesses of glass are available for greater thermal and sound insulation. See examples of the different glass we can offer below:

Thickness Glass Properties
4mm Float Glass Can expect good improvement in sound and heat insulation. (a.k.a. Annealed Glass)
4mm Obscure / Patterned / textured Glass Specified for aesthetics and privacy (e.g. in a bedroom or bathroom). Read More...
4mm Toughened Glass Same as float glass with added safety and security.
6mm Float Glass For better performance in sound and heat insulation when compared to 4mm float. Has greater strength than 4mm glass for use in larger panels. (a.k.a. Annealed Glass)
6mm Toughened Glass Same as 6mm float glass, but provides added safety and security.
6.4mm Laminated Safety Glass For superior sound and heat insulation and far superior safety and security.
6.8mm Acoustic Glass For a dramatic improvement in sound proofing / noise insulation.

For help choosing a glass thickness visit our Guidance page.

Paint Colour Options

Our Secondary Glazing is available in a range of conventional colours, or any of over RAL colour paint finish. RAL colour profiles are special order, as they are not held in stock. Unpainted mill finish aluminium will be sent away to a sprayers, which will result in a surcharge and an extended lead time. Our Conventional colour range is as follows:

Conventional Colour Range

KL9910 Semi-Gloss HIPCA White (KL9910 Semi-Gloss)

(KL9910 S-Gloss)

Van Dyke Brown (BS08B29 Gloss) Van Dyke Brown (BS08B29 Gloss)

Van Dyke Brown
(BS08B29 Gloss)

Silver Anodised Silver Anodised


RAL Colour Finishes

Our secondary Glazing is available in any single RAL colour paint finish. There are over two hundred different RAL colours available. Click the link below to see a selection of the available RAL colours.

See Our RAL Colour Chart

Please note that these on-screen representations of painted colours are for guidance only, intended to provide an indication of colour. Duration Windows cannot be held responsible for any discrepancies between on-screen and actual painted colours.

Trade Supplier of ALUK products Smarts Systems approved fabricator. We are the largest supplier of Smart products in the UK. BFRC British Fenestration Rating Council - under the Window Energy Rating Group Scheme We are CE Marking complient